Question

What do you mean by diffraction of light and state the condition for the diffraction obtain the conditions for secondary maxima and minima also draw the intensity distribution curve versus path difference?

Answer 1

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Answer 2

Diffraction - It is a process by which a beam of light or any other wave is spread out when passed through a narrow aperture.

• The phenomenon of bending light around the corners of an obstacle or edge is called diffraction
• condition of diffraction - Source of light should be monochromatic
• the wavelength of light should be comparable to that of the aperture or obstacle.
• condition for secondary maxima - asinθ = (2n-1)λ/2
• condition for secondary minima - asinθ = nλ
• where n= 1,2,3...
• a is the size of an aperture or obstacle.
• diffraction not only occurs with light waves it may also occur with sound waves.

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